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net: NETIF_F_HW_CSUM does not imply FCoE CRC offload

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NETIF_F_HW_CSUM indicates the ability to update an TCP/IP-style 16-bit
checksum with the checksum of an arbitrary part of the packet data,
whereas the FCoE CRC is something entirely different.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Cc: stable@kernel.org [2.6.32+]
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings 2010-10-22 04:38:26 +00:00 committed by David S. Miller
parent af1905dbec
commit 66c68bcc48
1 changed files with 3 additions and 3 deletions
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6
net/core/dev.c
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@ -1685,10 +1685,10 @@ EXPORT_SYMBOL(netif_device_attach);
static bool can_checksum_protocol(unsigned long features, __be16 protocol)
{
return ((features & NETIF_F_GEN_CSUM) ||
((features & NETIF_F_IP_CSUM) &&
return ((features & NETIF_F_NO_CSUM) ||
((features & NETIF_F_V4_CSUM) &&
protocol == htons(ETH_P_IP)) ||
((features & NETIF_F_IPV6_CSUM) &&
((features & NETIF_F_V6_CSUM) &&
protocol == htons(ETH_P_IPV6)) ||
((features & NETIF_F_FCOE_CRC) &&
protocol == htons(ETH_P_FCOE)));